Installing External Accessories - Festo DGE Serie Instrucciones De Utilizacion

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DGE−...−ZR/−SP

Installing external accessories

Preparations for installing the external accessories
·
Check to see which interrogation variant is required for your application.
Variant:
The fol
lowing are
necessary:
Installa
tion
require
ment:
Fig. 22
·
Use interrogation elements with the following features:
Element
Safety
limit
switch
Hardware
limit
switch
Software
limit
switch
Reference
point
switch
Fig. 23
Festo DGE−...−ZR/−SP 0909f English
1. The controller requires
a separate reference
point
1 reference point switch
2 hardware limit switches
Reference point switch
overlaps with a hardware
limit switch.
The hardware limit switch
overlaps with the safety
limit switches.
Design
External mechanical
roller switch with
switching function:
N/C contact
External inductive or
magnetic limit switch
with switching
function: N/C contact
Switching function:
N/O contact
2. The controller does not
require a separate
reference point
only 2 hardware limit
switches (HW)
1 hardware limit switch as
reference point switch.
Both hardware limit
switches overlap with the
safety limit switches
è
(
Commissioning").
Purpose
Triggering of the
EMERGENCY STOP
function
Triggering the
maximum braking
(emergency ramp)
Limiting the
positioning range by
parametrisation in the
controller
Definition of a point of
reference
Additional to
points 1 and 2
independent of
the control type
always 2 safety
limit switches
with safety
distance from
mechanical end
position
Note
As per accident
prevention regulation;
only prevents conse
quential damages
Enables damage−free
braking in the event of
programming errors
Are not overtravelled
in normal situations
Regular position
checks are
recommended
53

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